Current users of marijuana were more likely
than nonusers to drink alcohol, smoke cigarettes, and use other illicit
drugs. These associations varied, however, across age groups and substances.
In the youngest group (12 to 17), current marijuana users used alcohol
and cigarettes at five times the rate of those in this age group who were
not current marijuana users. In contrast, for the adult age groups, rates
of alcohol and cigarette use were higher among current marijuana users,
but the differences were less pronounced. However, for every age group,
current marijuana users were 11 to 16 times more likely to use other illicit
drugs than those who were not current marijuana users.
